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Re: 528 ci Hemi cam specs
[Re: Dragula]
#3110947
01/11/23 07:24 PM
01/11/23 07:24 PM
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Joined: Oct 2004
Posts: 5,618
long island NY
Ari440
OP
master
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OP
master
Joined: Oct 2004
Posts: 5,618
long island NY
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Do you think 680/270 to big for 10.1 comp on a street motor No. No.....But its no subtle either....What's beautiful about a Hemi, is its resistance to detonation....I would turn the compression up to 12:1 or 13:1 if I was building it as a pro-street or a little raced street car. If you keep the timing in check, you will never have an issue. Better off getting 12.1 comp pistons then ? Or stick with 10.5 comp pistons Thank you for your help every body
1.39 9.85 - 137 mph
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Re: 528 ci Hemi cam specs
[Re: Ari440]
#3110962
01/11/23 08:27 PM
01/11/23 08:27 PM
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Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,363
Las Vegas
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You shoudl have bought the one I sold. Basically same deal you are doing except it had the sheet metal tunnel ram and was a skoosh bigger.
Best of luck with it for sure. Ive been done that road why I sold the one I got with my truck for a song....
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: 528 ci Hemi cam specs
[Re: Ari440]
#3110972
01/11/23 09:11 PM
01/11/23 09:11 PM
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Joined: Dec 2006
Posts: 3,395
Pa
Hot 340
master
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master
Joined: Dec 2006
Posts: 3,395
Pa
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Do you think 680/270 to big for 10.1 comp on a street motor No. No.....But its no subtle either....What's beautiful about a Hemi, is its resistance to detonation....I would turn the compression up to 12:1 or 13:1 if I was building it as a pro-street or a little raced street car. If you keep the timing in check, you will never have an issue. Better off getting 12.1 comp pistons then ? Or stick with 10.5 comp pistons Thank you for your help every body Sorry but the hemi chamber isn't really that great, it's just "ok". I think you are fooling yourself if you think it's not gonna rattle with 12:1 on pump gas, especially while driving it. No matter where the timing is. The pump gas is freaking awful, even worse than it was 5 years ago. And 10:1 is pretty darn low for a long 270 duration. I talked to Tim Goolsby from Bullet/Ultradyne last week about a 272 in a 10.5 to 1 setup and he thought it was pretty long also. It's gonna soften it up.
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Re: 528 ci Hemi cam specs
[Re: Ari440]
#3117072
01/27/23 02:15 PM
01/27/23 02:15 PM
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Joined: Mar 2008
Posts: 73
Toronto,Canada
wkeggenhoff
member
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member
Joined: Mar 2008
Posts: 73
Toronto,Canada
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I have a Mopar/Ray Barton 528
I put a solid roller in spec''d by Tim Banning FHO
In the 600" lift range and 250 duration
Runs great on street. Never had to touch lash in 5 years. HAs a nice idle and according to Tim will support 800 hp if upgrades come down the road
I believe he said it will make enough vaccum for power brakes as well
I originally wanted a radical sounding cam for the Hemi but Tim talked me out of it saying not street friendly and woudnt start making power till 4000 rpm nd up
Glad he talked me out of it
69 dodge charger,528 Hemi,Keisler TKO 5spd, Mosier 60 rear end
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Re: 528 ci Hemi cam specs
[Re: wkeggenhoff]
#3117238
01/28/23 09:59 AM
01/28/23 09:59 AM
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Joined: Jan 2004
Posts: 4,566
Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,566
Motor City
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My 528 Hemi has a solid roller 55MM roller bearing camshaft with over .800+ lift and still a street cruiser. The RBRE rocker system has built in spray bars and helps keep everything lubed and cool. No issues thus far.
1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
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Re: 528 ci Hemi cam specs
[Re: Ari440]
#3117560
01/29/23 06:29 PM
01/29/23 06:29 PM
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Joined: Jul 2005
Posts: 707
California
BigDaddy440
super stock
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super stock
Joined: Jul 2005
Posts: 707
California
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What are the rocker arm ratios on a Hemi
1.5 ? Anyone know if the Ray Barton rocker set up can be had with custom ratio rockers? I know 1.5+ is common, but I'm wondering if 1.4 or 1.45 could be made to order? Additionally, is there any downside to a ratio under 1.5 assuming the lower net valve lift isn't needed? -Dan
1969 A12 Roadrunner
1970 Plymouth Cuda
1968 Dodge Dart
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Re: 528 ci Hemi cam specs
[Re: BigDaddy440]
#3117624
01/29/23 11:47 PM
01/29/23 11:47 PM
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Joined: Jan 2004
Posts: 4,566
Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,566
Motor City
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Mine are 1.6's. Yes you can order custom ratios from RBRE. They are made by T&D but they won't sell directly to individualso, one has to go to RBRE due to proprietary rights.
1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
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Re: 528 ci Hemi cam specs
[Re: 6PKRTSE]
#3117819
01/30/23 10:04 PM
01/30/23 10:04 PM
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Joined: Oct 2004
Posts: 5,618
long island NY
Ari440
OP
master
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OP
master
Joined: Oct 2004
Posts: 5,618
long island NY
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Mine are 1.6's. Yes you can order custom ratios from RBRE. They are made by T&D but they won't sell directly to individualso, one has to go to RBRE due to proprietary rights. Stock is 1.5 ratio I’m looking to get the Indy rockers for legend -1 heads You think this will be good enough for up to 680/270 lift
1.39 9.85 - 137 mph
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Re: 528 ci Hemi cam specs
[Re: wkeggenhoff]
#3117832
01/30/23 11:42 PM
01/30/23 11:42 PM
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Joined: Jul 2005
Posts: 707
California
BigDaddy440
super stock
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super stock
Joined: Jul 2005
Posts: 707
California
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I have a Mopar/Ray Barton 528
I put a solid roller in spec''d by Tim Banning FHO
In the 600" lift range and 250 duration
Runs great on street. Never had to touch lash in 5 years. HAs a nice idle and according to Tim will support 800 hp if upgrades come down the road
I believe he said it will make enough vaccum for power brakes as well
I originally wanted a radical sounding cam for the Hemi but Tim talked me out of it saying not street friendly and woudnt start making power till 4000 rpm nd up
Glad he talked me out of it Tim did you right. The Hemi cam I had ground by Porter for my street / strip 540 that I'm building is a little more aggressive with about 8-10 more degrees duration at .050, any more duration and it becomes a race engine with bad street manners.
1969 A12 Roadrunner
1970 Plymouth Cuda
1968 Dodge Dart
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Re: 528 ci Hemi cam specs
[Re: 6PKRTSE]
#3117833
01/30/23 11:47 PM
01/30/23 11:47 PM
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Joined: Jul 2005
Posts: 707
California
BigDaddy440
super stock
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super stock
Joined: Jul 2005
Posts: 707
California
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Mine are 1.6's. Yes you can order custom ratios from RBRE. They are made by T&D but they won't sell directly to individualso, one has to go to RBRE due to proprietary rights. Thank you.
1969 A12 Roadrunner
1970 Plymouth Cuda
1968 Dodge Dart
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